A BROADCAST DATA TRANSMISSION AND DISPLAY SYSTEM
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2001-Dec-21
This publication describes a system which provides the means for transmitting digital data to a large num- ber of radio receivers using existing commercial broad- cast stations and existing radio channels. The system embeds digital data on to regular analog commercial radio programming, which has substantial coverage in most commercial and consumer markets. The digital encoding is done at sub-audible frequencies, which makes the system compatible with existing technology and radio receiving equipment.